Sec Form 4 Filing - LYON ROBERT C @ CLAYTON WILLIAMS ENERGY INC /DE - 2016-10-10

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person LYON ROBERT C 2. Issuer Name and Ticker or Trading Symbol CLAYTON WILLIAMS ENERGY INC /DE [ CWEI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP-Gas Gathering/Marketing (Last) (First) (Middle) 6 DESTA DRIVE, SUITE 2025 3. Date of Earliest Transaction (MM/DD/YY) 10/10/2016 (Street) MIDLAND, TX79705 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $.10 par value 10/10/2016 S 5,000 D $ 90.41 ( 1 ) 17,044 D Common Stock, $.10 par value 19,495 I See footnote ( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other LYON ROBERT C 6 DESTA DRIVE, SUITE 2025 MIDLAND, TX79705 VP-Gas Gathering/Marketing Signatures /s/ Robert C. Lyon by Mel G. Riggs as attorney-in-fact 10/12/2016 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The price reported in Colum 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.22 to $90.69 inclusive. The undersigned undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. ( 2 )Indirect ownership held as follows: 10,000 shares by RCL Properties LLLP in which each of the reporting person and his spouse is a general partner of the partnership that owns the reported securities and the reporting person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein; 2,500 shares by Ellersly, Inc., a corporation in which Mr. Lyon's family holds all of the common stock and which Mr. Lyon is president and controls the majority of the stock; and 6,995 shares held in the Company's 401(k) Plan and Trust as of October 11, 2016.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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